5 ms·
Sure. And having that 2+ kHz headroom surely helps. Still, it is a bit jarring to almost never see reconstruction filter mentioned (except for sigma delta, wher
by 112233 2y ago
Sure. And having that 2+ kHz headroom surely helps. Still, it is a bit jarring to almost never see reconstruction filter mentioned (except for sigma delta, where you simply cannot ignore it), and always see appeals to Nyquist theorem as a mathematical proof, even though it does not apply.
Taking the opportunity, how is the math called that actually does apply to this case?
- Kirby64 2y agoEvery ADC/DAC used in audio in existence has an anti-aliasing filter, though. The Xiph video even talks about band-limiting signals with the 21 kHz cutoff filter he shows as the example. It's not talked about, largely, because modern circuit designs already have great anti-aliasing filters that have quite sharp rejection curves.